Recent results from NA48/2 Experiment at CERN-SPS

Preliminary results of the measurement of charged CP violating asymmetry $A_{g} =\frac{ g^{+} − g^{−}}{g^{+} + g^{−}}$ in both $3\pi$ decay modes, based on the whole accumulated statistics in 2003 and 2004, are presented. A new unexpected anomaly in the $2\pi^{0}$ mass subsystem spectrum in $K^{\pm} \rightarrow \pi^{\pm}\pi^{0}\pi^{0}$ decay, so called “cusp”, due to charge exchange re‐scattering process $(\pi^{+}\pi^{-} \rightarrow \pi^{0}\pi^{0})$ is discussed. A preliminary result indicates the observation of direct emission amplitude and first observation of an interference term in the non‐leptonic radiative rare decay $K^{\pm} \rightarrow \pi^{\pm}\pi^{0}\gamma$ is presented.